Strength-reinforcement for tooth-fillings.



W. E. SANBORN. STRENGTH REINFORCEMENT FOR TOOTH FILLINGS.

APPLICATION FILED NOV-9,1915.

Patented Feb. 22, 1916.

' 1,172,486 Specification ofLetteIsPatent.

To all whom it may concermi m we WILLIAM E. SANIBOB'N,

F DETROIT, MICHIGAN.

vsTRimorTniJanmroiwruunutrrole; TOOTH-FILLINGS, v

Be itknown that I, WVILLIAM E. SANBORN, a citizen of the United States of America, residing at Detroit, in the county-of-Wayne and State of Michigan, have invented certain Reinforcements'for T ooth-Fillings, ofwhich the following is a specification,reference'be- .1 'ing had 'th erein'to the accompanying draw- I 'I l This invention relates'toa' s trengthrein- "forcement for tooth fillings or crowns,- and provide a novel capfor a tooth fillings where- 1 fim y' bj'ectf0f my, inventiomis 'to by the tooth fillingis *relieved of stressesv and strains when pressure is brought tobear invention. i

tates filling or building up a -tooth, without 1:

upon a tooth repaired in accordance with 'my PL further object 'of' my'invention is to;

provide a novel cap for a tooth and toconnect z the same to a'tooth'in almannerathat facilisacrificing the natural strength thereof, and in a manner that the' fillingcan be properly. shaped and finished to make a neat appearance and eliminatecracks orcrevices-which-. 1.= ordinarily gather food and other matter. A still further object 'ofmy invention is to improve the art-of dentistry by a method of filling teeth which facilitates the oper--. ations of dentists and increasesthe longevity of dental work. i

The above and other-objects are attained-.;. by a mechanical construction and method of installing the? same as "will be he'rei'nafterflz specifically described and then claimed andm. reference will now be had to the drawing, wherein V Figure 1 is a vertical longitudinal sectional view of the tooth with a ridge piece in position; Fig. 2 is a similar view showing a matrix in position to facilitate filling the tooth; Fig. 3 is a similar view showing the filling completed relative to the cap of the tooth; Fig. 4 is a horizontal sectional view taken on the line IV-IV of Fig. 2; Fig. 5 is a perspective view of a detached cap; Fig. 6 is a vertical longitudinalsectional view of a tooth, showing a positioning sleeve; Fig. 7 is a similar view, showing a cap relative to the sleeve for vertical adjustment; Fig. 8 is a similar view illustrating a matrix in position to facilitate placing a filling in the tooth; Fig. 9 is a similar view illustrating a tooth filled and capped; Flg. 10 1s a horizontal sectional view taken on the line Patented Feb. 22', 1916.

Applicationfiled Hoveinber ,8,,.1 9.15 Serial 110, 60,115. 4 p I p X- X .OeFi 5;; Figs. 11 to" 14; inclusive illustrate a modification of my invention,

pertainingto a cap;v Fig, 15 isa horizontal sectional, viewztalgen on the line., X;Yf of Figs lfi, and F1g..16 is a perspective view of a detached caps; 1 I v Reference will-first .bevghad to Figs. l to 5 inclusiveshowing a tooth 1 having a portion or'cavity 2 thereof. tobe, filled. After this 1 portionor cavity. ofthe tooth'isthoroughly I cleansed ofz-decayed or injuredr parts,, .the bottom -of the cavity is drilled or recessed, as =at-"r3, to accommodate; the post or, pin 4 of-1a". metallic cap,;.5., The post 4i may be screwthr'eaded fluted,v serrated or otherwise -roughened,awhereby it maybe frictionally fitted in the recess.3,;or; a Suitable.;ce1nent 6 may.be-;gemployed to properly anchor the post t. .-After settingthe post 4 to hold the cap 15; inproper relation to theupper edge of the tooth. ;l,..a. matrix,7 sis placed around the tooth :whereby ao'filling 8 can'be placed in thecavity thereof: The matrix ;7 ,=may be inithez formof a strip of celluloid or other ma terial mounted around the tooth. and the filling=. 8 maybecement or any suitahlecomposition usedfor fillingpurposes. The ma- :trix; 7 permits of the filling-beingproperly positioned and tamped. around the post 4 and the roughenedsurfaceof the postcauses the filhngito adhere, thereto, In some inw stancesthe cavitybf the tooth-may be undermined- ;or tri-mmed whereby the filling will become positively anchored relative to the tooth; Aftervthe 'filling hasibeen properly set,- the matrix 7 is removed and the filling trimmed and polished at the meeting edges of the filling and the tooth body, also, around the edges of the cap 5. This cap, as best shown in Fig. 5, is of an inverted channel shape with one end thereof open, as at 9, and the opposite end thereof closed, as at 10. The open end of the cap 5 is adapted to overlie the ridge or upper edge of the tooth 1 and the closed end 10 of said cap rounds off the end of the filling as best shown in Fig. 8. The cap is made of gold or asuitable durable metal and since said cap is supported by the post 4 and the upper edge of the tooth body, the filling 8 is relieved of stresses and strains brought to bear upon the cap during the mastication of food.

A.modification of my invention is shown in Figs. 6 to 10 inclusive, and this modification simply includes means which will facilitate vertical adjustment by biting on caps before fillings harden in connection with.

sired distance, thus properly setting the cap.

The tube 11 having become set, the post'of the cap is removed and the matrix 7 placed in position, whereby a filling may be placed around the tube and properly'tamped. The cap and its post can then be placed in position and a dentist'is thus assured of proper vertical adjustment of the cap relative to a contacting tooth of either jaw. It is there-- fore apparent that the tube 11 constitutes means for predetermining the vertical ada justment of the cap to be permanently set on a tooth, and as a further instance of such procedure, reference Will now be had to Figs. 11 to l6inclusive. A tooth 12 is shown requiring a complete body and for such teeth it is preferable to use a, cap 13 having tooth posts 14. Tubes or sleeves 15 are used in the manner heretofore described for obtaining a temporary adjustment of the cap 13. Then a matrix 16, which may be of one or more parts, is placed on the tooth and: the body thereof built up by a suitable fill The cap,13, which has been illusing vl7. trated for a bicuspid tooth can then be placed in position and the entire structure properly finishedl Since I have illustrated the installation of one-and two cap posts for a tooth, it is ap-.

parent that such a'post can be used other than illustrated, for instance, where the central. portion or bodyof atoothremains, it is 1 possible to build up each end: of theitooth along the lines suggested by Figs. 1 to 10 in-. elusive.

II hile' in the drawings there are illustrated a the preferred embodiments of my invention, it -is to beunderstood that the construction and method herein involved of repairinga tooth are susceptible to such variations as fall within the scope of the appended 5 claims.

What I "claim is 1. The combination with a tooth, of a cap, means adapted to detachably support the 1 cap relative to said tooth whereby said cap may be vertically adjusted and a lfilling adapted to permanently-hold said. cap rela-.v tive to said tooth;

2. The combination with a tooth, of a tube carried thereby, a cap having a post'mounh ed in said tube with one end of said;capex-. tending on, to said tooth, and a filling adapted to be-placed under the opposite end 2 of: said cap. I H

3. The combinationwith a portionofra tooth, of tubes carried ithereby, posts deitachably mounted: in-said tubes, a cap car-; ried by said posts, and a filling adaptedto be interposed between said cap and the por-, tion of said tooth.

4. As a. new article of manufacture, a channel shaped cap having one end open, the other end closed, and a post protruding from within the channel of the cap.

In testimony whereof I affixmy signature in presence of two witnesses.

, WILLIAM E. SANBORN;

Witnesses: V

ANNA M. Donn, KARL'H. BUTLER.

Copies of thispatent may be obtained. for five cents each, by addressing the Commissioner of Patentsg; Washington, 13.0. 

